underwater watercolor set of corals and tridacna shell, hand painted with shadows and on white background

animal aquarium aquatic art background beach beautiful biology blue bright clam conch coral dive exotic illustration marine mollusk nature ocean oceanic reef scallop scuba sea seafood seascape seashell set shell sketch snorkeling souvenir spiral sponge squamosa subergorgia summer travel tridacna tropical tropics tube under undersea underwater view water watercolor wild yellow